Carbureter.



No. 670,92I. Patented Mar. 26, 190|. R. E. OLDS.

CABBURETER.

tApplicstion led July 23, 1900.) (No Model.)

A f' J Marten RANSOM E. OLDS, OF DETROIT, MICHIGAN.

CARBURETER.

IFGEIATION ormjng' part of Letters Patent No. 670,921, dated March 26, 1901.

Application filed July 23, 1900. Serial No. 24,581. A(No model.)

To @ZZ 11171/0721, it 'nM/U concern:

Beit known that I, RANSOM E. OLDs, a citizen of the United States, residing at Detroit, in the county of WVayne and State of Michigan, have invented certain new and useful Improvements in Carbureters, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention has reference generally to carbureters; and it consists, essentially, in the novel construction of mechanism for controlling the exit from the mixing-chamber, whereby the carb ureter will be capable of operating noiselessly and effectively.

The invention further consists in the peculiar construction and arrangement of the various parts of the carbnreter, as will be more fully hereinafter described, and pointed out in the claims.

In the drawings, Figure lis a vertical central section through my im proved carbureter. Fig. 2 is a section taken ou line m Fig. l; and Fig. 3 is a vertical central section through a carbu reter of modified construction.

In the drawings thus briefly referred to the reference-letter A designates an outer inclosing casing provided with an outlet B near one eud and air-inlet ports C and having formed therein at its opposite end a liquid-inlet port d. Within the casing and below the outlet is aceutrally-apertu red partition D,Which forms a support for an inner cylindrical casing E, the interior ot' which constitutes the mixingchamber. The inner casing is open-ended, as illustrated, and is arranged centrally over the liquid-inlet port, as shown.

The reference-letter F designates a valvestem extending through the inner casing, one end of which is provided with a head G, while upon the opposite end is a valve H, provided with a seat I, controlling the inlet-passage d. illounted upon this stem for slidingl movement is a piston-valve J, provided with wings L, which guidethe valve within theinnercasing.

The piston-valve just described is provided with a yielding support in the form of a coilspring M, which encircles the stem, the ends of the spring bearing, respectively, against the lower portion of the piston-valve guides and the upper face of the valve H, as shown in Fig. l. The spring just referred to is of such length as will hold the piston-valve normally Hush with the partition D. A similar spring O upon the stem, intermediate the head G andthe upper face of the piston-valve, forms a yielding connection between the val ve and the stem.

P designates a stop in the form of a headed screw for limiting the movement of the stem, the screw projecting within the outer casing in proximity to the stem-head, as indicated.

The carburetor thus described is coupled to the engine in the usual manner by means of a pipe leading from the outlet B, and the fluid-inlet port d is connected to a suitable source of fluid-supply. Upon thc passage of the mixture above the piston-valve into the engine air from the ports C is caused to euter the mixing-chamber and, acting upon the piston-valve J, raises the latter, together with the valve H. The latter valve is limited in its movement away from its seat by tle stop P; but the yielding connection between the piston-valve and the stem allows the former to continue its movement after the movement of the valve H is checked, thereby allowing the mixture Within the mixing-chamber tov readily pass out therefrom. After the passage of the mixture the valve controlling the liquid-inlet reseats by gravity and the pistonvalve is returned to its initial position, where it is held in suspension by the springs described.

From the foregoing description of my invention it will be readily seen that the controlling mechanism for the exit from the mixingchamber is of such construction as will permit of its operating noiselessly and that as the entire weight of the piston-valve is borne by its spring-support the usual jarring is prevented.

In the modification of my carburetor, as illustrated in Fig. 3, the stem upon which the piston-valve is mounted projects but slightly beyond the valve and is provided with a head Q. This bears normally against the Valve and constitutes the connection between the latter and its stem. The lower surface R of a packing composed of wire-cloth forms a stop which limits the travel of the stem. In this construction of carbureter the stop is so arranged as to permit the piston-valve to move the same distance as in the construction shown in Fig. l, means in the form of a needle-valve lOO S being provided for regulating the supply of liquid through the inlet-port; also, the outlet Vis arranged above the piston-Valve instead of at one side of the latter, as in the figure last referred to.

It will be obvious from the above that various modifications may be made in the oonstruotion of my improved carbureter without in any manner departing` from the spirit of my invention. Therefore While I have shown what I consider' to be the best construction I do not desire to be limited to the saine.

What I Claim as my invention is- 1. In a earbureter, the combination With a mixing-chamber, ofa piston-Valve Controlli ng rheexit from said chamber, astem upon vwhich the piston-valve slides, and a valve upon the stem controlling the Huid-inlet to the chamber.

2. In a carbureter; the combination with a mixing-eh amber, ofa piston-valve controllingr the exit from said chamber, astein upon which the piston-valve slides, a yieldinglr support for said. piston-valve, and a valve upon the stem controlling the fluid-inlet to the chamber.

3. In a oarbureter, the combination with a miXing-eham ber, ofapiston-valve controlling the exit from said chamber, a stem upon which the piston-valve slides, springs upon the stem arranged above and below the piston-Valve and acting to hold the latter in an operative position and a valve fixed to the stem oontrolling the .duid-inlet to the chamber.

4. In a earbureter, the combination with an outer easing having a valve-controlled fluidinlet port formed therein, of an inner openended casing arranged over the liquid-inlet port a stem for said inlet-valve extending' through the inner easing, a spring-supported piston-valve upon and having a sliding engagement with the stem, and a stop limiting the movemeni of the stem, substantially as described.

In testimony whereof I afx my signature in presence of two Witnesses.

RANSOM E. OLDS.

Witnesses:

M. B. ODOGHERTY, H. C. SMITH. 

